Remedy: 1 Check the fusing unit for correct installation (whether it is secured in position).The soaking roller thermistor/1 continues to detect a temperature lower than a predetermined one for a predetermined period of time.Description: Fusing abnormally low temperature detection (soaking side).4 Change TEMS1 (C3825) - 5 Change fusing unit - 6 Change IHPU - 7 PRCB ICP17 conduction check - 8 Change PRCB - 9 Change REDB.
![konica bizhub c652 fuser unit konica bizhub c652 fuser unit](https://www.hongtaipart.com/photo/hongtaipart/editor/20180110135609_60675.gif)
3 Check the fusing unit, IHPU, PRCB and REDB for proper connection and correct or change as necessary. 2 Check the open/close operation of the upper right door.
![konica bizhub c652 fuser unit konica bizhub c652 fuser unit](https://arcservicesco.com/images/thumbs/0018139_konica-minolta-fusing-drive-assembly-a0p0r73811-bizhub-c652-c552-c452-652-552_550.jpeg)
The signal is turned ON to activate the hard ratchet at the edges of the heating side.The heating roller temperature sensor/3 continues to detect a temperature higher than a predetermined one for a predetermined period of time.Description: Fusing abnormally high temperature detection (Edge of the heating roller).